UPD360 datasheet(177/221 Pages) MICROCHIP

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 2016-2017 Microchip Technology Inc.

DS00002084C-page 177

UPD360

12.5.1

PPC VBUS CURRENT MEASUREMENT REGISTER (PPC_VBUS_CURRENT)

This register stores the measured current value delivered to the external device via the VBUS pin. This value is updated

continuously while the device is in the Active power state. The bit weights are in mA and the range is from 0mA to

3400mA (1 LSB = 13.3mA).

This data will be cleared whenever the port power switch is turned off (or any time that VBUS is discharged).

Note:

This register’s data is not intended for use when current is <100mA.

12.5.2

PPC VBUS PORT STATUS REGISTER (PPC_VBUS_PORT_STS)

Address:

0400h

Size:

8 bits

Bits

Description

Type

Default

1706.2 mA

853.1 mA

426.6 mA

213.3 mA

106.6 mA

53.3 mA

26.7 mA

13.3 mA

Address:

0402h

Size:

8 bits

Bits

Description

Type

Default

RESERVED

ALERT

This bit is asserted when an error (ERR) occurs in the PPC. It also asserts the

PPC_INT bit in the Interrupt Status Register (INT_STS), if enabled.

This bit can also be configured to assert when the LOW_CUR (portable

device is pulling less current and may be finished charging) bit is set and

linked via the ALERT_LINK bit. The ALERT bit is de-asserted when all error

conditions that may assert it (error condition, and LOW_CUR if linked) have

been removed or reset as necessary.

RESERVED

CC_MODE

Indicates that the IBUS current on VBUS has exceeded ILIM and sourcing

Region 2.

3:0

RESERVED

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